221230_SingleTon

 

 

 

package day20_StringTest;

public class StringTest {

	public static void main(String[] args) {
		String aa = "Iloveyou";
		aa = aa.replace("love", "♥");
		System.out.println(aa);
		aa=aa.concat(" k★rea");
		System.out.println(aa);
		aa=aa.toUpperCase();
		System.out.println(aa);
		boolean bb=aa.contains("YOU");
		if(bb) {
			System.out.println("YOU 문자가 존재합니다.");
		}
		else {
			System.out.println("YOU 문자가 없습니다.");
		}
	}
}

 

package day20_StringTest;

public class StringTest {

	public static void main(String[] args) {
		String aa = "    I love you     ";
		System.out.println(aa);
		aa=aa.trim();
		System.out.println(aa);
		int a=10;
		String ab = String.valueOf(a);
		System.out.println(ab+ab);
	}
}

 

package day20_StringTest;

public class StringTest {
	public static void main(String[] args) {
		StringBuffer sb = new StringBuffer();
		sb.append("korea");
		System.out.println(sb+"\t"+sb.hashCode());
		sb.append("iloveyou");
		System.out.println(sb+"\t"+sb.hashCode());
		sb.delete(5, 10);
		System.out.println(sb);
		sb.insert(5, "♥");
		System.out.println(sb);
		sb.replace(0, 6, "ilove");
		System.out.println(sb);
		int bb = sb.length();
		System.out.println(bb);
	}
}

 

package day20_StringTest;

import java.util.Scanner;

public class StringTest {
	public static void main(String[] args) {
		//회원명단 5명 이름저장
		//외부에서 찾는 이름 입력	
		String sb= "한라산 백두산 설악산 금강산 내장산";
		Scanner sc = new Scanner(System.in);
		System.out.println("찾으시는 이름을 입력");
		String sname = sc.next();
		if(sb.contains(sname)) {
			System.out.println(sname+"은 명단에 있습니다.");
		}
		else {
			System.out.println(sname+"은 명단에 없습니다.");
		}
	}
}

 

package day20_StringTest;

import java.util.Scanner;

public class StringTest {
	public static void main(String[] args) {
		//회원명단 5명 이름저장
		//외부에서 찾는 이름 입력	
		String [] sb= {"한라산","백두산","설악산","금강산","내장산"};
		Scanner sc = new Scanner(System.in);
		System.out.println("찾으시는 이름을 입력");
		String sname = sc.next();
		String bi = null;
		for(int i=0;i<sb.length;i++) {
			if(sb[i].equals(sname)) {
				bi="회원이다";
				break;
			}
			else {
				bi="비회원이다";
			}
		}
		System.out.println(bi);
	}
}

 

package day20_StringTest;

import java.util.StringTokenizer;

public class StringTokennizerTest {

	public static void main(String[] args) {
		String str = "나 보기가 역겨워 가실 때에는 말없이 고이 보내드리오리다";
		StringTokenizer st = new StringTokenizer(str," ");
		System.out.println("토큰의 수 : "+st.countTokens());
	}
}

 

package day20_Sample2;

class sp {
	String spname;
	int su,danga,price;
	public sp() {}
	public sp(String spname, int su, int danga, int price) {
		super();
		this.spname = spname;
		this.su = su;
		this.danga = danga;
		this.price = price;
	}
	public String getSpname() {
		return spname;
	}
	public void setSpname(String spname) {
		this.spname = spname;
	}
	public int getSu() {
		return su;
	}
	public void setSu(int su) {
		this.su = su;
	}
	public int getDanga() {
		return danga;
	}
	public void setDanga(int danga) {
		this.danga = danga;
	}
	public int getPrice() {
		return price;
	}
	public void setPrice(int price) {
		this.price = price;
	}
}
public class DTO extends sp implements Comparable<DTO>{
	String name;
	int age;
	String address;
	public DTO() {}
	public DTO(String name, int age, String address) {
		super();
		this.name = name;
		this.age = age;
		this.address = address;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public String getAddress() {
		return address;
	}
	public void setAddress(String address) {
		this.address = address;
	}
	
	@Override
	public String toString() {
		return "DTO [name=" + name + ", age=" + age + ", address=" + address + ", spname=" + spname + ", su=" + su
				+ ", danga=" + danga + ", price=" + price + "]";
	}
	public int compareTo(DTO t) {
		if(price<t.price) return 1;
		else return -1;
	}
}

 

package day20_Sample2;

import java.io.FileNotFoundException;
import java.util.Scanner;

public class Menu {

	public static void main(String[] args) throws FileNotFoundException {
		Scanner sc = new Scanner(System.in);
		DAO dao = new DAO();
		while(true) {
			System.out.println("[1]입력");
			System.out.println("[2]출력");
			System.out.println("[0]종료");
			System.out.println("원하는 작업 입력");
			int n = sc.nextInt();
			switch (n) {
			case 0:System.exit(0);break;
			case 1:dao.insert();break;
			case 2:dao.out();break;
			}
		}
	}
}

 

package day20_Sample2;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;

public class DAO {
private SingleTone ston;
	
	public DAO() {
		ston=SingleTone.koko();
	}
	public void insert() throws FileNotFoundException {
		
		FileReader fr = new FileReader("c:/data/12301.txt");
		BufferedReader br = new BufferedReader(fr);
		while(true) {
			try {
				DTO dto = new DTO();
				String str = br.readLine();
				if(str == null)break;
				dto.setSpname(str.substring(0, 1));
				if(dto.getSpname().equals("a"))dto.setSpname("사과");
				if(dto.getSpname().equals("b"))dto.setSpname("바나나");
				if(dto.getSpname().equals("m"))dto.setSpname("참외");
				dto.setSu(Integer.parseInt(str.substring(1, 3)));
				dto.setDanga(Integer.parseInt(str.substring(3, 7)));
				dto.setPrice(dto.getSu()*dto.getDanga());
				dto.setName(str.substring(7, 10));
				dto.setAge(Integer.parseInt(str.substring(10, 12)));
				dto.setAddress(str.substring(12));
				ston.list.add(dto);
			} 
			catch (IOException e) {
				e.printStackTrace();
			}
		}
	}
	public void out() {
		Collections.sort(ston.out());
		for(DTO a:ston.out()) {
			System.out.println(a.toString());
		}
	}
}

 

package day20_Sample2;

import java.util.ArrayList;

public class SingleTone {
	private static SingleTone ston; //객체 선언
	ArrayList<DTO> list = new ArrayList<DTO>();
	public static SingleTone koko() {
		if(ston==null)
			ston = new SingleTone();
		return ston;
	}
	public void addin() {
		
	}
	public ArrayList<DTO> out() {
		return list;
	}
}

---

package day20_Sample1;
class Poom {
	String spname;
	int su;
	int danga;
	int price;
	public Poom() {}
	public String getSpname() {
		return spname;
	}
	public void setSpname(String spname) {
		this.spname = spname;
	}
	public int getSu() {
		return su;
	}
	public void setSu(int su) {
		this.su = su;
	}
	public int getDanga() {
		return danga;
	}
	public void setDanga(int danga) {
		this.danga = danga;
	}
	public int getPrice() {
		return price;
	}
	public void setPrice(int price) {
		this.price = price;
	}
}
public class CompanyDTO extends Poom implements Comparable<CompanyDTO>{
	String name;
	int age;
	String address;
	public CompanyDTO() {}
	public CompanyDTO(String spname, int su, int danga) {}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public String getAddress() {
		return address;
	}
	public void setAddress(String address) {
		this.address = address;
	}
	public int compareTo(CompanyDTO t) {
		if(price<t.price) return 1;
		else return -1;
	}
}

 

package day20_Sample1;

import java.io.FileNotFoundException;
import java.util.Scanner;

public class Menu {

	public static void main(String[] args) throws FileNotFoundException {
		Scanner sc = new Scanner(System.in);
		DAO dao = new DAO();
		while(true) {
			System.out.println("[1]입력");
			System.out.println("[2]출력");
			System.out.println("[0]종료");
			System.out.println("원하는 작업 입력");
			int n = sc.nextInt();
			switch (n) {
			case 0:System.exit(0);break;
			case 1:dao.insert();break;
			case 2:dao.out();break;
			}
		}
	}
}

 

package day20_Sample1;

public class Mamechul {
	public int maechul(int su , int danga) {
		return su*danga;
	}
}

 

package day20_Sample1;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.Collections;

public class DAO {
	private Singleton ston;
	public DAO() {
		ston = Singleton.ton();
	}
	ArrayList<CompanyDTO> list = new ArrayList<CompanyDTO>();
	public void insert() throws FileNotFoundException {
		FileReader fr = new FileReader("c:/data/12301.txt");
		BufferedReader br = new BufferedReader(fr);
		while(true) {
			try {
				CompanyDTO dto = new  CompanyDTO();
				Mamechul mea = new Mamechul();
				String str = br.readLine();
				if(str==null)break;
				dto.setSpname(str.substring(0, 1));
				if(dto.getSpname().equals("a"))dto.setSpname("사과");
				if(dto.getSpname().equals("b"))dto.setSpname("바나나");
				if(dto.getSpname().equals("m"))dto.setSpname("참외");
				dto.setSu(Integer.parseInt(str.substring(1, 3)));
				dto.setDanga(Integer.parseInt(str.substring(3, 7)));
				dto.setPrice(mea.maechul(dto.getSu(), dto.getDanga()));
				dto.setName(str.substring(7, 10));
				dto.setAge(Integer.parseInt(str.substring(10, 12)));
				dto.setAddress(str.substring(12));
				ston.addin(dto);
			}
			catch (IOException e) {
				e.printStackTrace();
			}
		}
	}
	public void out() {
		DecimalFormat df = new DecimalFormat("#,##0");
		System.out.println("상품명\t수량\t단가\t금액\t이름\t나이\t주소");
		System.out.print("=======================================");
		System.out.println("========================================");
		Collections.sort(ston.out());
		for(CompanyDTO a:ston.out()) {
			System.out.print(a.getSpname()+"\t");
			System.out.print(a.getSu()+"\t");
			System.out.print(df.format(a.getDanga())+"\t");
			System.out.print(df.format(a.getPrice())+"\t");
			System.out.print(a.getName()+"\t");
			System.out.print(a.getAge()+"\t");
			System.out.println(a.getAddress()+"\t");
		}
	}
}

 

package day20_Sample1;

import java.util.ArrayList;

public class Singleton {
	private static Singleton ston;
	ArrayList<CompanyDTO> list = new ArrayList<CompanyDTO>();
	public static Singleton ton() {
		if(ston==null)
			ston = new Singleton();
		return ston;
	}
	public void addin(CompanyDTO dto) {
		list.add(dto);
	}
	public ArrayList<CompanyDTO> out() {
		return list;
	}
}

---